1) Melissa will participate in a charity walkathon. Her mother will donate $10 for Melissa's
participation plus an additional for each mile that Melissa walks.
a) If Melissa walks miles, what will be the amount of her mother's donation?

b) Write an equation for, the amount in dollars, of Melissa's mother's donation as a function of
the number of miles Melissa walks.

c) If the donation is , how many miles did Melissa walk?

d) Melissa wants her mother to donate no more than . What is the greatest number of miles she
can walk?